The ratio of investments of two partners P and Q is 7:5 and the ratio of their profits is 7:10. If P invested the money for 5 months, find for how much time did Q invest the money?
A. 7 months
B. 10 months
C. 9 months
D. 11 months
Explanation:
7*5: 5*x = 7:10
x = 10